Connect with us

Hi, what are you looking for?


Clean Power

First Study Linking Geothermal Gas to Asthma

A three-year study in Iceland has found a linkage between geothermal gases and respiratory illnesses like asthma.

Published in the journal Environmental Research, the study compared respiratory illness in adults to daily air pollution levels in Reykjavik, Iceland.

Hellisheidi Geothermal Power Plant

The researchers measured respiratory illnesses by counting how many adults filled prescriptions for asthma-related medication each day between March 2006 and December 2009, as registered in the national health database limited to adults living near the capital city.

They then measured levels of air pollutants at a busy intersection in Reykjavik, including hydrogen sulfide produced by geothermal facilities outside the city.

The results showed that a one-hour peak in traffic pollutants would eventually lead to an increase in the number of adults filling prescriptions for asthma medications. On top of that, gradual increases in the daily average for hydrogen sulfide were also found to be linked to the number of adults filling out asthma-related prescriptions.

For both traffic and geothermal pollutants, increases in the number of adults filling prescriptions generally took place 3 to 5 days after increased exposure — given that such exposure levels do not necessarily result in immediate asthma attacks, that seems natural.

This is one of the first studies to directly link increases in asthma-related troubles with hydrogen sulfide, and will result in more research being undertaken in an effort to further understand the implications. Additionally, the study showed that short peaks in air pollutants may cause more harm to the human respiratory system than longer-term averages.

Source: Environmental Health News
Image Source: martin_vmorris

Sign up for daily news updates from CleanTechnica on email. Or follow us on Google News!

Have a tip for CleanTechnica, want to advertise, or want to suggest a guest for our CleanTech Talk podcast? Contact us here.

Autonomous Drones for Better Farming

I don't like paywalls. You don't like paywalls. Who likes paywalls? Here at CleanTechnica, we implemented a limited paywall for a while, but it always felt wrong — and it was always tough to decide what we should put behind there. In theory, your most exclusive and best content goes behind a paywall. But then fewer people read it! We just don't like paywalls, and so we've decided to ditch ours. Unfortunately, the media business is still a tough, cut-throat business with tiny margins. It's a never-ending Olympic challenge to stay above water or even perhaps — gasp — grow. So ...
If you like what we do and want to support us, please chip in a bit monthly via PayPal or Patreon to help our team do what we do! Thank you!
Written By

I'm a Christian, a nerd, a geek, and I believe that we're pretty quickly directing planet-Earth into hell in a handbasket! I also write for Fantasy Book Review (, and can be found writing articles for a variety of other sites. Check me out at for more.


You May Also Like

Air Quality

There are so many industries that Tesla is affecting — threatening even. There are a couple that don’t get much thought or attention, though....

Climate Change

When lockdowns during the coronavirus pandemic cut local nitrogen oxide emissions, the effect on ozone pollution was global and unexpectedly rapid.

Air Quality

Children whose mothers were exposed to high levels of ultrafine particulate pollution while they were in utero were more likely to develop asthma, new research has...

Air Quality

With the work-from-home trend’s emergence; lockdowns and closures of various typical gathering spaces like cinemas, restaurants, cafes, and shopping centers; most of us are...

Copyright © 2023 CleanTechnica. The content produced by this site is for entertainment purposes only. Opinions and comments published on this site may not be sanctioned by and do not necessarily represent the views of CleanTechnica, its owners, sponsors, affiliates, or subsidiaries.